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Today i took my car in for a wash and detail (07 750li) and when i left my screen wasnt on. We finally got the screen to come on but i have no navigation, no radio, cd, no sound including the parking sensors, seatbelt chime, etc. Certain items are greyed out. They claim all they did was shampoo the carpets and that couldnt have caused the problem. My question is, is it possible something may have gotten wet? Could they have messed up my amp which might be causing problems? It was all good just a week ago lol... But seriously any help would be much appreciated...thanks